package practice;

class MyRunnable implements Runnable {
    @Override
    public void run() {
        while (true) {
            System.out.println("hello thread");
            try {
                Thread.sleep(1000);
            } catch (InterruptedException e) {
                throw new RuntimeException(e);
            }
        }
    }
}主线程23432421545

public class Demo3 {
    public static void main(String[] args) {
        MyRunnable myRunnable = new MyRunnable();
        Thread t = new Thread(myRunnable);
        t.start();
        while(true){
            System.out.println("hello main");
            try{
                Thread.sleep(1000);
            }catch (InterruptedException e){
                throw new RuntimeException(e);
            }
        }


    }
}